Monarch Migration Update: October 27, 1999The first monarchs have reached the sanctuaries! Mexican student Luis Fernando Romero sends the
news from his family's store in nearby Angangueo. Meanwhile, millions upon millions of butterflies are traveling
that way, heading for an area only 1.1 degrees wide, in longitude. How many miles wide is the finish line of the
monarchs' marathon migration?

Volunteers Needed Now for Study: Milkweed and Spring Monarch
MigrationMonarch biologist Dr. Lincoln Brower asks your help with a new study to document the timing of the
northward monarch migration and the emergence of milkweed. "Monarchs may be leaving their overwintering sites
in Mexico earlier than normal. Logging may have thinned their forests, resulting in drier, warmer air--and activating
the spring migration prematurely." Volunteers are needed NOW, because milkweed plots must be identified this
fall. Please help with this simple but important study.

Monarch Migration Update: October 20, 1999Students in the Mexican sanctuary region are carefully watching the skies, and are ready to report
the arrival of the first monarchs. They know the butterflies are now traveling through northern Mexican and will
soon appear. They also know that thousands of students in the U.S. and Canada are waiting to hear from them! How
close to the sanctuaries are the monarchs now?

Monarch Migration Update: October 13, 1999Las mariposas monarcas llegan en Mexico! The monarchs have now crossed the border into Mexico! So
if you can't read Spanish, it's time to find a friend who can. People in Texas are accustomed to everything BIG,
and the migration reports during the last week were just that. Tens, dozens, hundreds--even thousands--of monarchs
were seen in the skies, trees and fields across the state last week. What theory about migration pathways does
Biologist Calvert hope to test this year?

Monarch Migration Update: October 6, 1999The Monarchs have arrived in Texas: "I stood and watched from our 39th floor window as tens
of butterflies floated upon the wind currents flowing around our building...." According to our Texas observers,
the leading edge of the migration has now reached latitude 30N. How many more miles do the monarchs have to travel,
and when do you predict they'll reach the sanctuaries? How might the drought in Texas affect migrating monarchs?

Monarch Migration Update: September 29, 1999Observers in Texas should be on the lookout for the millions of monarchs now heading their way!
In addition to high monarch activity in the south-central states, the migration along the East Coast continued
to be strong last week, after the passage of Hurricane Floyd. Did Floyd blow the monarchs that were sighted in
England last week over 2000 miles of open ocean?

Monarch Migration Update: September 22, 1999Last week we watched with concern as people along the East Coast waited out Hurricane Floyd. After
the storm passed, observers all along the Coast--from Maine to Florida--commented about the abundance of migrating
monarchs there. Meanwhile, Midwest monarchs are flooding into Missouri. How high do monarchs fly during migration?
Dr. Bill Calvert shares his views from the ground.

Monarch Migration Update: September 15, 1999The cold front that moved into the East last weekend seems to have caused the first surge of migration
there. Why does Biologist Brower think eastern monarchs will be smaller this year? Monarchs continued to pour out
of the North Central U.S. States all last week, and the forward edge of the migration in the Midwest should now
be moving into Nebraska. Make your own digital migration maps with this free software and migration data.

Monarch Migration Update: September 8, 1999Weekly migration updates will be posted here, according to the schedule above. Please help track
the monarch migration to Mexico by reporting your observations. Take this data sheet with you into the field, and tell us what you see!